Hi! Best bet is to call your OB-GYN directly or ask your midwife kung saan sila usually nag-refer for OGTT tests, kasi alam nila ang reliable clinics around Lucena. Pwede din you check sa major hospitals doon like Lucena Doctors Hospital or ask sa health center ng municipality kung may affiliated laboratory sila for gestational screening, marami kaming kaibigan na nag-ask din ng ganyan at laging may options based sa clinic nila.